Law is a universal institution that has pretensions of being ubiquitous and complete. However, in a complex, plural and volatile world, its limits and possibilities are shaken by the speed, depth and extent of ongoing transformations, its resulting ethical dilemmas, and the difficulties of forming consensus in the political universe. This article provides a reflection on how the Law has attempted to deal with some of the main afflictions of our time, facing demands that include the needs to (i) keep the technological revolution on an ethical and humanistic track, (ii) avoid that democracy be perverted by populist and authoritarian adventures and (iii) prevent solutions to climate change from coming only when it is too late. At a time when even the near future has become unpredictable, Law cannot provide a priori solutions to multiplying problems and anxieties. When this happens, we must set clear goals for the future of humanity, basing them on the essential and perennial values that have followed us since antiquity.